Chapter 6 Ubjectives+ Calorimetry27 of 42Constants Periodic TableA calorimeter is an insulated device in which achemical reaction is contained. By measuring thetemperature change, AT, we can calculate theheat released or absorbed during the reaction usingthe following equation:Consider the reactionC12 H22 O11 (s) + 1202 (g)+12C02 (g) + 11H20(1)in which 10.0 g of sucrose, C12 H22011, was burned in a bomb calorimeter with a heat capacity of 7.50kJ/ C. The temperature increase inside the calorimeter was found to be 22.0°C. Calculate the change ininternal energy. AE, for this reaction per mole of sucrose.q= specific heat x mass x ATOr, if the calorimeter has a predetermined heatcapacity, C, the equation becomesExpress the change in internal energy in kilojoules per mole to three significant figures.• View Available Hint(s)q = C x ATAt constant pressure, the enthalpy change for thereaction, AH is equal to the heat, qpi that is,AH= qpkJ/molAE =but it is usually expressed per mole of reactant andwith a sign opposite to that of q for thesurroundings. The total internal energy change,AE (sometimes referred to as AU), is the sum ofheat, g, and work done, w:SubmitPrevious Answers* Incorrect; Try Again; 18 attempts remainingAE = q+ wHowever, at constant volume (as with a bombcalorimeter) w =0 and so AE = qu.Next>Provide Feedback3.28

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Consider the reaction C12 H22O1 (s) +1202 (g)+12C02 (g)+ 11H20(1) in which 10.0 g of sucrose, C12 H22O11, was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/ C. The temperature increase inside the calorimeter was found to be 22.0 °C. Calculate the change in internal energy, AE, for this reaction per mole of sucrose. Express the change in internal energy in kilojoules per mole to three significant figures. • View Available Hint(s) kJ/mol AE = Submit Previous Answers

Consider the reaction C12 H22O1 (s) +1202 (g)+12C02 (g)+ 11H20(1) in which 10.0 g of sucrose, C12 H22O11, was burned in a bomb calorimeter with a heat capacity of 7.50 kJ/ C. The temperature increase inside the calorimeter was found to be 22.0 °C. Calculate the change in internal energy, AE, for this reaction per mole of sucrose. Express the change in internal energy in kilojoules per mole to three significant figures. • View Available Hint(s) kJ/mol AE = Submit Previous Answers

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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